The offramp would allow many northbound I-5 drivers to exit and go over the tracks as opposed to having to get off at Fourth Street, 88th Street NE or 116th Street NE and sit at railroad crossings just east of the freeway.

Whether the ramp gets built or not, more trains would still spell more backups for city traffic. Marysville has 18 railroad crossings — 11 public and eight private, city administrator Gloria Hirashima said. That’s by far the most of any city in Snohomish County.

The proposed Gateway Pacific terminal would serve as a place to send coal, grain, potash and scrap wood for biofuels to Asia. Coal would be moved by train from Montana and Wyoming across Washington and up through Seattle and Snohomish County toward Bellingham.

The terminal, proposed by SSA Marine, Inc. of Seattle, would bring up to 18 more trains per day along the route — nine full and nine empty.

The company estimates construction work on the terminal would create up to 1,700 jobs and 4,400 temporary spin-off positions. The terminal itself is forecast to employ 450 people and generate 800 connected positions.

Opponents’ arguments against the plan include potential traffic congestion and pollution from coal dust.

Environmental studies on the terminal and trains are in the beginning stages and expected to take more than a year.

The off-ramp is also likely a couple of years away at best.

A $1.2 billion pot of federal money the state is in line to receive from the federal government has already been assigned to other projects, said Kris Olsen, a spokeswoman for the state Department of Transportation.

Another project that could help with railroad-crossing traffic is a $42 million expansion of the interchange at I-5 and 116th Street NE.

The interchange is only about a half mile west of the railroad tracks, so reducing congestion there would help at the crossing, officials have said. The interchange project is designed but still needs money for construction, according to Nehring.